We describe a standard star catalog constructed using multiple SDSS photometric observations (at least four per band, with a median of ten) in the ugriz system. The catalog includes 1.01 million non-variable unresolved objects from the equatorial stripe 82 (|δJ2000| < 1.266) in the RA range 20h University of Washington, Dept. of Astronomy, Box 351580, Seattle, WA 98195 Dept. of Physics & Astronomy, Austin Peay State University, Clarksville, TN 37044 Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 Princeton University Observatory, Princeton, NJ 08544 Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan New Mexico State University, Box 30001, 1320 Frenger St., Las Cruces, NM 88003 Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 50R5032, Berkeley, CA, 94720 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 University of California–Santa Cruz, 1156 High St., Santa Cruz, CA 95060 Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ 08540 School of Physics and Astronomy, University of Southampton, Highfield, Southampton, SO17 1BJ, UK U.S. Naval Observatory, Flagstaff Station, P.O. Box 1149, Flagstaff, AZ 86002 Department of Astronomy, Case Western Reserve University, Cleveland, Ohio 44106 Apache Point Observatory, 2001 Apache Point Road, P.O. Box 59, Sunspot, NM 88349-0059 Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 University of Chicago, Astronomy & Astrophysics Center, 5640 S. Ellis Ave., Chicago, IL 60637